Some notes on editing icons for the NWN style. Example icons:

NameIconRough HTML CodeNotes
Feat

7da8d1

White and black contrast

White fading into blue

Spell

8b7486 (more drab) or 7c5574

Similar contrast to feats

Purple-ish colouring

Spell Scroll

White version applied to the scroll iconThis is the spell icon but made into a white form. Black is transparent.
Skill


Colouring Icons

To edit a image to a certain colour first greyscale it (Colours → Desaturate → Mono Mixer).

Then a rough 60% opacity Burn use of the Fill tool. Tweak to fit.

Then add the border after removing bits with the magic wand. This example below doesn't seem to show the alpha, but it is meant to be there!

Spell Scrolls

Need to do this process not done yet.